Worksheet on Estimating Sums and Differences
In 4th grade worksheet on estimating sums and differences, all grade students can practice the questions on estimations. This exercise sheet on estimating sums and differences can be practiced by the students to get more ideas to find the estimated sum and difference to its nearest ten, hundred and thousand.
1. Estimate the difference. One has been done for you.
(ii) 29 - 12 = _____
(iii) 36 - 16 = _____
(iv) 49 - 24 = _____
(v) 72 - 57 = _____
(vi) 86 - 18 = _____
2. Find the estimated difference (nearest 10).
(i) 74 - 8
(ii) 65 - 12
(iii) 36 - 28
(iv) 92 - 57
Answer:
2. (i) 60
(ii) 60
(iii) 10
(iv) 30
3. Find the estimated sum (nearest 100).
(i) 421 + 560
(ii) 165 + 102
(iii) 367 + 550
(iv) 209 + 627
Answer:
3. (i) 1000
(ii) 300
(iii) 10000
(iv) 800
4. Find the estimated sum to the nearest ten and also find the actual sum:
(i) 1 6 7 + 2 5 9 = ______ .
(ii) 3 6 4 + 5 8 9 = ______ .
(iii) 7 6 9 + 5 5 6 = ______ .
(iv) 2 5 0 + 3 7 3 = ______ .
(v) 4 6 3 + 2 7 9 = ______ .
(vi) 8 5 0 + 4 9 9 = ______ .
5. Estimate each sum to the nearest hundred and also the actual sum:
(i) 9 7 5 + 7 7 8 = ______ .
(ii) 4 1 7 0 + 2 3 9 7 = ______ .
(iii) 7 3 0 0 + 5 3 1 5 = ______ .
(v) 5 6 8 5 + 3 4 7 4 = ______ .
(v) 2 3 9 7 + 5 6 6 8 = ______ .
(vi) 3 7 1 3 + 5 1 3 5 = ______ .
6. Find the estimated sum to the nearest thousand and also the actual sum:
(i) 3 1 8 0 6 + 4 7 8 0 8 + 2 2 3 9 7 = ______ .
(ii) 4 3 1 4 1 + 4 1 3 1 7 + 3 5 7 0 9 = ______ .
(iii) 5 0 0 9 3 + 2 9 9 7 9 + 3 1 1 8 4 = ______ .
7. Find the estimated difference to the nearest ten and also the actual difference:
(i) 5 8 - 4 7 = ______ .
(ii) 1 9 1 - 1 6 8 = ______ .
(iii) 8 6 7 - 2 4 9 = ______ .
(iv) 5 3 9 - 3 2 4 = ______ .
(v) 7 4 7 - 3 6 8 = ______ .
(vi) 9 8 6 - 7 7 8 = ______ .
8. Estimate the difference to the nearest hundred and also the actual difference:
(i) 3 9 1 6 - 1 4 5 8 = ______ .
(ii) 4 6 1 5 - 2 2 8 6 = ______ .
(iii) 9 4 3 8 - 4 1 5 9 = ______ .
(iv) 5 8 6 1 - 2 9 4 4 = ______ .
(v) 8 3 5 1 - 2 9 7 4 = ______ .
(vi) 4 7 6 2 - 2 0 8 5 = ______ .
9. Estimate each difference to the nearest thousand and also find the actual difference:
(i) 6 7 5 1 9 - 4 1 3 8 9 = ______ .
(ii) 7 1 6 0 2 7 - 5 4 9 5 6 8 = ______ .
(iii) 4 5 6 5 0 7 - 2 4 7 5 6 9 = ______ .
10. Estimate the answer by rounding off the numbers. Solve to check your answer:
Answer:
10.
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